A bathtub or tank designed to be filled with warm water and occupied by a patient for the application of various forms of physical hydrotherapy such as water jet massage or aquatic exercise, typically to help treat musculoskeletal pain and stiffness or for physical rehabilitation; it is not dedicated to flotation therapy. It may have built-in water jet nozzles or an external heating/pump system to heat and circulate the water (whirlpool effect). This device is intended to be used in a healthcare facility.